To initiate these updates manually, do the following: So that they can use their updated address book when they are offline.Earlier Exchange Versions Outlook Connects to the Mailbox Server for MAPI Connectivity.So you have to monitor this folder and see if the files get updated.In fact, it may be ok to just monitor the timestamp of and report back if the file gets older than one day (for example).To find out which server is responsible for generating the OAB you can use two methods: Exchange Management Console (EMC) The Public Folders may be configured to have additional replica’s.This ensures that the OAB files are stored in multiple Public Folder databases.**Offline Address book data are saved in the form of LZX files** They are located at By Default – C:\Program Files\Microsoft\Exchange Server\V14\Exchange OAB Every OAB will have their own GUID value, To Find the GUID Value of the Default Offline address book, You can Customize the name of the oab as per your requirement When Right Click on the Offline Address book if you Click on Update , The LZX files should get updated on Mailbox Server ** Data Modified Changes to Recent Date – Lzx files are updating ** Now Outlook 2003 Users should be able to download their Offline address books from Public Folders Now here Goes the Web-Based Distribution much efficient and must faster.
It’s a more effective way of downloading OAB than from public folder.
Web-based distribution supports more clients and consumes less bandwidth.
The OAB is downloaded via a virtual directory on the client access server.
For Users where Outlook is in Cache mode, They got to have their Outlook Address book when they are offline.
If Outlook is left running constantly in Cached Exchange Mode, it updates the Offline Address Book automatically about once a day, depending on Address Book updates on the server running Exchange.